JP2013243578A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal which determines a shift from a state where a portable terminal is not used for a while to a state that the use of the portable terminal is started.SOLUTION: A portable terminal includes: a housing; an inclined angle detection part detecting an inclined angle of the housing; and a holding state determination part determining the holding state of the housing on the basis of the contact state of a person, which holds the housing, with the housing. The portable terminal determines that the use of the portable terminal is started on the basis of the holding state of the housing determined by the holding state determination part when the inclined angle detection part detects a change of the inclined angle which is equal to or larger than a given angle.

Description

  The present invention relates to a mobile terminal that determines a use state.

  The portable terminal device of Patent Literature 1 includes the inclination of the portable terminal device when a registration password (registered password coordinate data) is generated by the key lock setting process, and the password at the time of release by the key lock release process (password coordinate data at the time of release). Even when the inclination of the mobile terminal device when the is generated is different, the coordinate area of the password coordinate data at the time of release is converted into the coordinate area of the registered password coordinate data according to the change amount of the inclination, When the locus of the password coordinate data coincides with the release, the operation of the key operation unit is validated. Thereby, the locus of the registered password coordinate data and the locus of the password coordinate data at the time of release can be compared at the correct position. For this reason, it is possible to prevent erroneous operations and ensure security without impairing the convenience of the user.

JP 2011-160326 A Japanese Patent No. 4441147 JP 2007-288421 A

  The portable terminal device of Patent Document 1 described above enables the operation of the key operation unit if the locus of the password coordinate data at the time of release matches the locus of the registered password coordinate data even if the inclination of the portable terminal device is different. . The key lock release processing is performed in any inclination of the portable terminal device in the portable terminal device in which the operation of the key operation unit is invalid. For this reason, even when the user of the mobile terminal device does not intend to start using the device, the key lock release processing may be performed. However, power is consumed when the key lock release processing is performed. For this reason, it is not desirable to execute the key lock release processing when the user does not intend.

  An object of the present invention is to provide a portable terminal capable of determining a transition from a state in which it has not been used for a while to a state in which use has started.

The portable terminal of the present invention is configured to grip the casing based on a contact state between the casing, an inclination angle detection unit that detects an inclination angle of the casing, and a person who holds the casing. A gripping state discriminating unit for discriminating a state, wherein the gripping state of the casing determined by the gripping state discriminating unit is detected when the tilt angle detecting unit detects a change in the tilt angle of a certain level or more. Based on this, the start of use of the mobile terminal is determined.
According to this configuration, after the user lifts the mobile terminal that has not been used for a while and is stationary, it is possible to determine the start of use of the mobile terminal according to the gripping state of the mobile terminal by the user. On the other hand, even if the user lifts and holds the mobile terminal, it is not determined that the user has started using the mobile terminal depending on the gripping state of the mobile terminal. In this way, it is possible to determine the start of use of the mobile terminal based on the subsequent gripping state of the mobile terminal, using as a trigger a change in the tilt angle of a certain level or more when the user lifts the mobile terminal.

In addition, when the tilt angle detection unit detects a change in tilt angle of a certain level or more, the mobile terminal of the present invention is based on the tilt angle detected by the tilt angle detection unit in addition to the gripping state of the housing. Determine whether to start using a mobile device.
With this configuration, it is possible to more accurately determine the start of use of the mobile terminal by the user.

In the portable terminal of the present invention, the casing when it is determined that the use of the portable terminal is started is in a state of being gripped by a hand of a person who grips the casing, and the casing is gripped. In this state, the displacement of the inclination angle detected by the inclination angle detection unit is less than a predetermined value.
With this configuration, after the user lifts the mobile terminal, the state of carrying the mobile terminal is not determined to be the start of use of the mobile terminal.

The portable terminal of the present invention includes an input unit and an authentication unit that authenticates a subject based on an operation input to the input unit, and when the use start of the portable terminal is determined, The authentication unit is instructed to authenticate the subject based on an operation input to the input unit.
With this configuration, the subject is authenticated only when it is determined that the use of the mobile terminal is started. For this reason, power consumption can be reduced compared with the case where the subject is authenticated each time the user lifts the mobile terminal.

  In the portable terminal of the present invention, the housing includes a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface, A contact detection unit that detects contact with a person holding the casing is provided on the side surface of the casing.

  In the portable terminal of the present invention, the contact detection unit is provided on each of the four side surfaces constituting the housing.

  According to the mobile terminal of the present invention, it is possible to determine a transition from a state in which the mobile terminal has not been used for a while to a state in which use has started.

External view showing a portable terminal of an embodiment The figure which shows the state in which the user held the portable terminal 100 shown in FIG. The block diagram which shows the internal structure of the portable terminal 100 shown in FIG. The flowchart which shows operation | movement of the portable terminal 100 of one Embodiment. The flowchart which shows the detail of the determination process performed in step S101 shown in FIG. 4 whether the portable terminal 100 is a use start state. (A)-(f) is a figure which shows the different holding | grip state of the portable terminal 100

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an external view showing a mobile terminal according to an embodiment. As shown in FIG. 1, the mobile terminal 100 has a display 101 on the front. A touch panel (not shown) is placed on the display 101 of the portable terminal 100 in an overlapping manner. In addition, when the longitudinal direction of the housing 105 is the vertical direction, the mobile terminal 100 has an electrode 103T used for detecting the gripping state of the mobile terminal 100 on the top surface of the housing 105, and the electrode 103B. The body 105 is provided on the bottom surface, and the electrodes 103 </ b> L and 103 </ b> R are provided on the left and right side surfaces of the housing 105. In the following description, the top surface, the bottom surface, and the left and right side surfaces of the housing 105 that connect the surface on which the display 101 is disposed and the back surface thereof are referred to as “side surfaces”. When the user uses the portable terminal 100, for example, as shown in FIG. FIG. 2 is a diagram illustrating a state in which the user holds the mobile terminal 100 illustrated in FIG. 1 by hand.

  FIG. 3 is a block diagram showing an internal configuration of the mobile terminal 100 shown in FIG. As illustrated in FIG. 3, the mobile terminal 100 includes a control unit 151, a storage unit 153, a display unit 155, an operation unit 157, a wireless communication unit 159, a usage state detection unit 161, and an authentication unit 163. Prepare. Hereinafter, each component of the portable terminal 100 will be described.

  When the mobile terminal 100 is in the screen lock state, the control unit 151 determines whether or not the use of the mobile terminal 100 is started according to the detection result of the use state detection unit 161 (hereinafter referred to as “use start state”). Determine. When the control unit 151 determines that the mobile terminal 100 is in a use start state, the control unit 151 activates the authentication unit 163. A method for determining whether or not the control unit 151 is in the use start state based on the detection result of the use state detection unit 161 will be described later with reference to the flowchart shown in FIG.

  Further, the control unit 151 determines that the mobile terminal 100 is not being used when there is no operation on the operation unit 157 for a predetermined time or more. In this case, the control unit 151 sets the mobile terminal 100 to the screen lock state in order to prevent an erroneous operation.

  The storage unit 153 stores a program for the control unit 151 to operate. The display unit 155 is the display 101 of the mobile terminal 100 shown in FIG. The operation unit 157 receives an operation on the mobile terminal 100. The operation unit 157 is a power button of the mobile terminal 100 or a touch panel disposed on the display 101 of the mobile terminal 100. When the control unit 151 uses information on a network to which the mobile terminal 100 can be connected, the wireless communication unit 159 accesses the network and acquires necessary information.

  The usage state detection unit 161 detects the usage state of the mobile terminal 100. The usage state detection unit 161 includes an electrode 171, a gripping state determination unit 173, and an inclination angle detection unit 175.

  The electrodes 171 are electrodes 103T, 103B, 103L, and 103R disposed on each side surface of the housing 105 of the mobile terminal 100 shown in FIG. Details of the electrode 171 will be described later. The gripping state determination unit 173 detects the gripping state of the mobile terminal 100 based on the signal obtained from the electrode 171. The detection result of the gripping state by the gripping state determination unit 173 is sent to the control unit 151.

  The tilt angle detection unit 175 detects the tilt angle of the mobile terminal 100. As shown in FIG. 2, the inclination angle of the mobile terminal 100 is an angle θ in the longitudinal direction of the mobile terminal 100 with respect to the vertical direction. The tilt angle detection unit 175 includes a gyroscope or an acceleration sensor, and derives the tilt angle by integrating the angular acceleration twice or by integrating the angular velocity. The tilt angle, angular acceleration, or angular velocity detected by the tilt angle detection unit 175 is sent to the control unit 151.

  The electrode 171 is, for example, an antenna that transmits and receives a radio signal for measuring the impedance of a user (subject) holding the mobile terminal 100. In this case, the electrode 171 may be disposed inside the housing 105 so as not to be seen by the user of the mobile terminal 100. The gripping state determination unit 173 detects the impedance value of the subject from signals transmitted and received between different electrodes, and determines the gripping state of the portable terminal 100 by the subject based on the impedance value.

  Further, the electrode 171 may input and output a weak current of the impedance of the subject. In this case, the electrode 171 is disposed in a state exposed to the outside from the side surface of the housing 105. The gripping state determination unit 173 detects the impedance value of the subject from the weak current input / output between different electrodes, and determines the gripping state of the portable terminal 100 by the subject based on the impedance value.

  The electrode 171 may be a contact sensor. In this case, the electrode 171 is disposed in a state exposed to the outside from the side surface of the housing 105. The gripping state determination unit 173 determines the contact state between the portable terminal 100 and the subject based on the detection signal from each contact sensor. Note that the gripping state determination unit 173 may derive the pressure when the subject grips the mobile terminal 100 based on the contact area detected by the contact sensor. In this case, the gripping state determination unit 173 may determine the contact state between the portable terminal 100 and the subject based on the detection signal from each contact sensor and the derived pressure.

  The authentication unit 163 performs personal authentication for releasing the screen lock using a predetermined authentication method. In a predetermined authentication method, characters, figures, signs, fingerprints, voices, face images, pulse wave signals, palm vein patterns, or the like are used. The authentication unit 163 includes an input unit 181, a storage unit 183, and a verification unit 185.

  Characters, graphics, signs, fingerprints, voices, face images, pulse wave signals, vein data, or the like are input to the input unit 181 by the user of the mobile terminal 100. The storage unit 183 stores registered user identification information used in the authentication method of the authentication unit 163. The collation unit 185 collates the data input to the input unit 181 with the data stored in the storage unit 183 and performs personal authentication processing. Note that when a plurality of types of data (for example, a signature and a fingerprint) are input, the authentication unit 163 performs authentication based on the input types of data even if the authentication is performed based on any one type of data. May be performed.

  Hereinafter, with reference to FIG. 4, an example of the operation of the mobile terminal 100 in a screen lock state since it has not been used for a while will be described. FIG. 4 is a flowchart illustrating the operation of the mobile terminal 100 according to the embodiment.

  When the mobile terminal 100 is in the screen lock state, the control unit 151 of the mobile terminal 100 determines whether or not the mobile terminal 100 is in a use start state (step S101). Details of step S101 will be described later with reference to FIG. Next, in step S103, according to the determination result obtained in step S101, the control unit 151 proceeds to step S105 if the mobile terminal 100 is in the use start state, and returns to step S101 if it is not in the use start state. In step S105, the control unit 151 activates the authentication unit 163.

  Next, the control unit 151 displays on the display unit 155 (display 101) a screen that prompts the user to input a release key necessary for personal authentication by the authentication unit 163 (step S107). Next, the collation unit 185 of the authentication unit 163 collates the release key input from the input unit 181 with the data stored in the storage unit 183, and performs personal authentication processing (step S109). Next, the control unit 151 determines whether the individual authenticated in step S109 has been authenticated as a user who can use the mobile terminal 100 (step S111), and if authenticated as an available user, the process proceeds to step S113. If it is not authenticated, the process returns to step S101. In step S113, the control unit 151 releases the screen lock state of the mobile terminal 100.

  FIG. 5 is a flowchart showing details of the determination process performed in step S101 shown in FIG. 4 to determine whether or not the mobile terminal 100 is in a use start state. Hereinafter, the details of the determination process will be described. Even when the mobile terminal 100 is in the screen lock state, the gyroscope or acceleration sensor included in the inclination angle detection unit 175 of the use state detection unit 161 detects angular acceleration at regular time intervals.

  The control unit 151 determines whether or not the change amount of the detected angular acceleration per unit time is equal to or greater than the threshold value (step S151). If the change amount is equal to or greater than the threshold value, the control unit 151 proceeds to step S153, and the threshold value is reached. If it is less than the value, the process returns to step S151. In step S153, the control unit 151 acquires the detection result of the gripping state of the mobile terminal 100 by the gripping state determination unit 173 of the use state detection unit 161. Next, the control unit 151 determines whether or not the mobile terminal 100 is in a use start state based on the detection result obtained in step S153 and the attitude of the mobile terminal 100 indicated by the tilt angle obtained from the tilt angle detection unit 175. Is determined (step S155).

  In step S155, if the detection result obtained in step S153 indicates a state where the mobile terminal 100 is held by hand, and the displacement amount of the tilt angle of the mobile terminal 100 per unit time is less than a predetermined value, The control unit 151 determines that the mobile terminal 100 is in a use start state.

  Hereinafter, an example of determining whether or not the mobile terminal 100 is in the use start state based on the gripping state and posture of the portable terminal 100 performed in step S155 of FIG. 5 will be described with reference to FIGS. 6A to 6F are diagrams illustrating different gripping states of the mobile terminal 100. FIG.

  In the gripping state shown in FIG. 6A, the user grips the mobile terminal 100 in the vertical direction with the two side surfaces and the back surface facing each other with one hand, the user operates the mobile terminal 100 with the thumb of the same hand, and the remaining fingers Supports the portable terminal 100 on the right side. The amount of change in angular acceleration when the user lifts the portable terminal 100 that has not been used for a while and is stationary is greater than or equal to the threshold value, and then the user moves the portable terminal 100 as shown in FIG. When gripped, if the displacement amount of the tilt angle of the mobile terminal 100 at this time is less than a predetermined value, the control unit 151 determines that the mobile terminal 100 is in a use start state.

  In the gripping state shown in FIG. 6B, the user grips the mobile terminal 100 with one side and the back side with one hand, the user operates the mobile terminal 100 with the thumb of the same hand, and the remaining fingers are the back side. The portable terminal 100 is supported. The amount of change in angular acceleration when the user lifts the portable terminal 100 that has not been used for a while and is stationary is equal to or greater than a threshold value, and then the user moves the portable terminal 100 as shown in FIG. If the displacement amount of the tilt angle of the mobile terminal 100 when gripped is less than a predetermined value, the control unit 151 determines that the mobile terminal 100 is in a use start state.

  In the gripping state shown in FIG. 6C, the user grips the mobile terminal 100 in the vertical direction with two side surfaces facing each other with one hand, and the user operates the mobile terminal 100 with fingers of different hands. The amount of change in angular acceleration when the user lifts the mobile terminal 100 that has not been used for a while and is stationary is equal to or greater than a threshold value, and then the user moves the mobile terminal 100 as shown in FIG. When gripped, if the displacement amount of the tilt angle of the mobile terminal 100 at this time is less than a predetermined value, the control unit 151 determines that the mobile terminal 100 is in a use start state.

  In the gripping state shown in FIG. 6D, the user grips the mobile terminal 100 in the lateral direction with the four side surfaces and the back surface with both hands, and the user operates the mobile terminal 100 with at least one of the thumbs of both hands. The amount of change in angular acceleration when the user lifts the portable terminal 100 that has not been used for a while and is stationary is equal to or greater than a threshold value, and then the user moves the portable terminal 100 as shown in FIG. When gripped, if the displacement amount of the tilt angle of the mobile terminal 100 at this time is less than a predetermined value, the control unit 151 determines that the mobile terminal 100 is in a use start state.

  In the gripping state shown in FIG. 6 (e), the user grips the mobile terminal 100 with three sides with one hand, and the user carries the mobile terminal 100. The amount of change in angular acceleration when the user lifts the portable terminal 100 that has not been used for a while and is stationary is equal to or greater than a threshold value, and then the user moves the portable terminal 100 as shown in FIG. If it is held and carried, the displacement amount of the tilt angle of the mobile terminal 100 at this time becomes equal to or greater than a predetermined value, and therefore the control unit 151 determines that the mobile terminal 100 is not in the use start state.

  In the gripping state shown in FIG. 6 (f), the user grips the portable terminal 100 with two side surfaces facing each other with one hand. The amount of change in angular acceleration when the user lifts the portable terminal 100 that has not been used for a while and is stationary is greater than or equal to the threshold value, and then the user moves the portable terminal 100 as shown in FIG. When gripped, if the displacement amount of the tilt angle of the mobile terminal 100 at this time is less than a predetermined value, the control unit 151 determines that the mobile terminal 100 is in a use start state.

  As described above, the mobile terminal 100 according to the present embodiment is not used for a while, and after the user lifts the mobile terminal 100 in a stationary state, the user can hold the mobile terminal 100 without changing the posture of the mobile terminal 100. Then, it is determined that the use of the mobile terminal 100 has started, and personal authentication is activated. On the other hand, even if the user lifts and holds the portable terminal 100, personal authentication is not activated unless the posture of the portable terminal 100 is stabilized. In this way, the mobile terminal 100 can determine the transition from the state that has not been used for a while to the use start state. In addition, since personal authentication is not activated unless it is determined that the use is started, power consumption can be reduced even when the user does not start using the mobile terminal 100 as compared to when personal authentication is activated.

  The portable terminal according to the present invention is useful as a portable terminal or the like that determines a transition from a state in which the portable terminal has not been used for a while to a state in which usage has started.

DESCRIPTION OF SYMBOLS 100 Mobile terminal 101 Display 103T, 103B, 103L, 103R Electrode 105 Case 151 Control part 153 Storage part 155 Display part 157 Operation part 159 Wireless communication part 161 Use state detection part 163 Authentication part 171 Electrode 173 Grasping state discrimination | determination part 175 Inclination angle Detection unit 181 Input unit 183 Storage unit 185 Verification unit

Claims (6)

A housing,
An inclination angle detector for detecting an inclination angle of the housing;
A gripping state determination unit that determines a gripping state of the casing based on a contact state with the casing by a person holding the casing;
When the tilt angle detection unit detects a change in tilt angle that is greater than or equal to a certain level, it determines the start of use of the mobile terminal based on the gripping state of the housing determined by the gripping state determination unit.
Mobile device. The mobile terminal according to claim 1,
When the inclination angle detection unit detects a change in the inclination angle of a certain level or more, in addition to the gripping state of the housing, the use start of the mobile terminal is determined based on the inclination angle detected by the inclination angle detection unit.
Mobile device. The mobile terminal according to claim 2,
The case when it is determined that the use of the mobile terminal is started is in a state of being gripped by a hand of a person who grips the case, and the tilt angle detection unit is in a state of being gripped of the case The displacement of the tilt angle detected by is less than a predetermined value,
Mobile device. It is a portable terminal as described in any one of Claims 1-3,
An input section;
An authentication unit that authenticates a subject based on an operation input to the input unit,
When determining the start of use of the mobile terminal, the authentication unit is instructed to authenticate the subject based on the operation input to the input unit.
Mobile device. It is a portable terminal as described in any one of Claims 1-4,
The housing includes a first surface, a second surface facing the first surface, and a side surface connecting the first surface and the second surface,
Provided on the side surface of the housing with a contact detection unit that detects contact with a person holding the housing;
Mobile device. The mobile terminal according to claim 5,
The contact detection unit is provided on each of the four side surfaces constituting the housing.
Mobile device.

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